Stove.



S. P. SMITH.

STOVE.

APPLICATION FILED rm. 6, 1913.

1,105,856. Patented Aug. 4, 1914.

(CT-24G INVENTOR WIT/V5885 ATTORNEY THE NORRIS PETERS C0,. P JTHOH WASHINGTON, D. C.

UNITED STATES 9 PATENT OFFICE.

' STEPHEN r. SMITH, 0s BERKELEY, CALIFORNIA, AssIGNon; or ONE-FOURTH T0 RUMSEY L; RICH ,AND ONE-FOURTH T0 FRED A. NASSIE, BOTHOF BERKELEY,

CALIFORNIA, AND ONE-FOURTH TO FORNIA. a

CHARLES W. KEIVER, OAKLAND, CALI- STOVE.

PatcntcdAug. 4, 1914;

7 Application filed February 6, 1913. Serial No. 146,525.

To all whom it mat concern:

Be it known that I, STEPHEN P. SMITH, a

citizen of the United States, residingat Berkeley, in the county of Alamedaand State of California, have I1IIVGIltBd certain new and useful Improvements in Stoves, of which the following is a speclfication.

My invention relates to the class of stoves especially designed for use: asheaters.

The object of my invention is to provide a simple and economical stoveadapted for, using gaseous or l1qu1d fuel, said stove being so constructed as to present a long and tortuous course for the heatedproducts of combustion and a widely extended heating surface exposed to the room, and said stove being so connected as to draw wholly from the exterior theair necessaryfor the burner flame 1 directly, and to support combustion generally, and also to take from the exterior, if desired, fresh air to be heated.

To this end my invention consists in the novel stove, its construction and connections, which I shall now fullyidescribe' by reference to the accompanying drawings in which+ Figure 1 is a front elevation of my stove. Fig. 2 is a vertical section on the line wm of Fig. 1. Fig.3 is a small detail sectional view,reduced, on the line y-y of Fig. 1. y

The stove is formed of a shell: 1 composed of suitable plates or sheets,supported on legs 2. In the lower portionof the shell is formed the combustion, chamber 3, with a sloping upper wall 4:. The chamber 3 at its highest point communicates through a chancommunicatingthrough end passages 10, 11

and 12. The uppermost flue 9 of the zig:

zagseries communicates through a passage 13 with the top heating chamber 1 1, which chamber communicates with the discharge flue 15 which may be supposed to extend throughthe wall of the room or building to the exterior air or into a suitable chimney.

By referring to Fig. 2, it will be seen that between the upper wall of the flue 6 and the floor of the flue 7 the intervening heating space 16 is open through the front of the stove and is exposed to the room. In the same manner the heating space 17 between the upper wall of the flue 8 and the floor of the flue 9 is opento the room.

14., Short nipples 24; effect communication a from the front ends of the spaces 21., 22 and 23, through the front of the shell into the a room.

25 is a fresh air pipe which leads in from the exterior air. Thls plpe communicates through a branch 25w1th the fresh air flue 18,said communication being controlled by a damper or valve 26, seen 111 F1gs.'2 and 3.

The damper 26 also controls an opening 26 by which the flue 18 communicates with the room. The fresh air pipe 25 extends along one side of the shell 1 to about midway of said side and there is enlarged vertically, the upper portion of the enlargement receiving the gas pipe 27 which passes through it and extends into the end of the burner pipe 28 which lies within the lower part of the combustion chamber 3. This burner pipe is the ordinary pipe, perforated as seen in Fig. 3, of aBunsen burner, and the necessary air is furnished it from the upper portion of the enlarged end of the fresh air pipe 25 through the apertured hood 29. The lower portion of the enlarged end of the fresh air pipe 25 connects with a branch pipe 30, which, as seen in Fig. 1, extends under the shell from side to side and this branch pipe opens upward directly into the combustion chamber 3,,as seenin Fig. 3.

The operation of the stove is as follows Heat is supplied by the burner 28, the oxygen for the flame being 1 furnished through the apertured hood 29 from the fresh air a pipe 25; and said pipe also furnishes the air-necessary to support generalcombustion, through the branch pipe 30. All this air being from without, the air of the room is not consumed. By reason of the tortuous course of the products of combustion through the several flues of the stove, the walls of the shell are well heated and by reason of the large area of these walls, a very expansive heating surface is provided to warm the air in the room. Moreover, if fresh outside air be desired, it canbe drawn in by opening the damper 26. This will pass into the back flue 18 and thence,

' through the back nipples 19 and through the openings 20 and the front nipples 2 1 and will find its way into the room, being brought into contact, during this course, with the eX- tensive heating surfaces of the stove. When the damper 26. is closed to the fresh air pipe 25, the back flue 18 will be open to the room through the opening26, and the circulation above mentioned will be of air-in the room.

' In Fig. 2, I show short flanges 31 depending into two of the zigzagflues." These serve to partially trap and retain the heated gases to increase their efl'e'ct. For the same purpose, I show the discharge flue 15 slightly dropped below the roof of the top chamber 14.

chamber being spaced from the front wall of v greater width at the rear :of'the casing adjacent the flue than atits-end adjacent "the front of the casing, the. more extensive end of. the chamber abutting the flue and comber, heating chambers arranged [above the first mentioned chamber, said'chambers tapering in width from the rear to the front of the casing their smaller endsbeing disposed adjacent the flue and "communicating ,therewith throughfr'elati-Vely small openings, the 1 larger ends of said chambers opening through the front wa ll of thefcasin g, and a plurality of zigzag fluesdispose'd'intermedi ate the heating chambers and communicating with 'a stack at thetopof'thefcasing.

. the casing, said heating gbeingjof i In testimony whereof I have signed my 1 name to this specification in the presence of two subscribing witnesses. t a STEPHEN.-P. SMITH;

Witnesses: I A -i WM. F. Boo'rrr, D; B. RICHARDS.

Copies of. this patent may be 'obtained for fiv'e' cents each, by addressing the 1 Commissioner of Iatents,

y Washington, 13.0. i

, 0 inunicating with'the same through a relatively small opening :at thebase of the cham- 

